Ark-Deşarj Yöntemi ile Sentezlenen ZnO Nanoparçacıkları Kullanılarak Hazırlanan Polianilin/ZnO Nanokompozitleri ve Fotokatalitik Uygulamaları

Yıl 2012, Cilt: 27 Sayı: 4, 111 - 120, 01.12.2012

Volkan Eskizeybek Handan Gülce Ahmet Gülce Ahmet Avcı Eda Akgül

Öz

Polianilin (PANI) ve PANI/ZnO nanokompozitleri, sırasıyla anilin ve ZnO nanoparçacık ilave edilmiş anilinin kimyasal oksidatif polimerizasyonu ile sentezlenmiştir. ZnO nanoparçacıkları ark-deşarj yöntemi ile sentezlenerek PANI/ZnO nanokompozitlerinin hazırlanmasında kullanılmıştır. ZnO nanoparçacıklarının PANI’nin karakteristiği üzerindeki etkisini incelemek amacıyla Anilin/ZnO nanoparçacık molar oranı değiştirilmiştir. Taramalı elektron mikroskopisi analizlerine gore, ZnO nanoparçacıkları PANI matriks içerisinde homojen bir şekilde dağıtılmıştır. PANI/ZnO nanokompozitlerinin Fourier dönüşümlü Infrared spektroskopisi ile yapılan incelemelerinde, PANI matriks içerisindeki ZnO nanoparçacık miktarı arttıkça PANI’ye ait karakteristik bantların daha yüksek dalga boylarına kaydığı tespit edilmiştir. Ayrıca, hazırlanan nanokompozitler ile malahit yeşili sulu boya çözeltisinin ultraviole ışık etkisi altında bozunması araştırılmıştır. Deneysel olarak elde edilen sonuçlara gore, malahit yeşili sulu çözeltisi içerisine 1,2 g/L PANI/ZnO nanokompozit katalizörü katıldığında 180 dakika sonunda %98’in üzerinde bozunma gerçekleştiği bulunmuştur.

Anahtar Kelimeler

Polianilin, ZnO, Ark-deşarj, Kimyasal polimerasyon, Nanokompozit

PREPARATION OF POLYANILINE/ZnO NANOCOMPOSITES BY USING ARC-DISCHARGE SYNTHESIZED ZNO NANOPARTICLES AND PHOTOCATALYTIC APPLICATIONS

Öz

Polyaniline (PANI) and PANI/ZnO nanocomposites were synthesized by the chemical oxidative polymerization of aniline and aniline with the presence of ZnO nanoparticles, respectively. The ZnO nanoparticles synthesized by arc-discharge method were used in this study to produce PANI/ZnO nanocomposites. Aniline/ZnO nanoparticles molar ratio was changed to investigate the effect of ZnO nanoparticles to the characteristic of the PANI. The scanning electron microscope analysis showed that ZnO nanoparticles were completely dispersed in PANI matrix homogeneously. It is revealed that shifting to the higher wavenumbers occurred by the increasing ZnO nanoparticle content in fourier transform infrared spectroscopy analysis. Furthermore, degradation of malachite green in aqueous solution was carried out with the prepared nanocomposites under ultraviolet irradiation. The experimental results showed that 1.2 g/L of the nanocomposite could catalyze green solution above 98% after 180 min of irradiation.

Anahtar Kelimeler

Polyaniline, ZnO, Arc-discharge, Chemical polymerization, Nanocomposite

Kaynakça

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